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  5. Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)
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Please use this identifier to cite or link to this item: https://olympias.lib.uoi.gr/jspui/handle/123456789/7740
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dc.contributor.authorKagalou, I.en
dc.contributor.authorPapastergiadou, E.en
dc.contributor.authorLeonardos, I.en
dc.date.accessioned2015-11-24T16:33:58Z-
dc.date.available2015-11-24T16:33:58Z-
dc.identifier.issn0301-4797-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/7740-
dc.rightsDefault Licence-
dc.subjectshallow lakesen
dc.subjecteutrophicationen
dc.subjectnutrientsen
dc.subjectchlorophyll-aen
dc.subjectexternal loaden
dc.subjectphysical-chemical featuresen
dc.subjecthypertrophic lakeen
dc.subjectseasonal-variationen
dc.subjectwater-qualityen
dc.subjectphytoplanktonen
dc.subjectphosphorusen
dc.subjectnutrienten
dc.subjectfishen
dc.subjectpamvotisen
dc.subjectstateen
dc.titleLong term changes in the eutrophication process in a shallow Mediterranean lake ecosystem of W. Greece: Response after the reduction of external loaden
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.primaryDOI 10.1016/j.jenvman.2007.01.039-
heal.identifier.secondary<Go to ISI>://000254955800017-
heal.identifier.secondaryhttp://ac.els-cdn.com/S0301479707000692/1-s2.0-S0301479707000692-main.pdf?_tid=372eef348fdc7dca103d7e94a914f129&acdnat=1335512628_e4b5564787b44984a7dd956ff2d47353-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιώνel
heal.publicationDate2008-
heal.abstractLake Pamvotis is a shallow Mediterranean lake located in Western Greece near the city of Ioannina. The lake has been recognized as an internationally important conservation Site under European Community legislation due to its rich biodiversity. However, during the last three decades the trophic status of the lake has changed as a result of anthropogenic activity (among others irrigation and domestic sewage discharge), resulting in serious problems. Here we present data about the long-term development in eutrophication of Lake Pamvotis. Water samples were collected and analyzed (water temperature, pH, dissolved oxygen, nutrients, chlorophyll-a) during three monitoring periods: 1985-1989, 1998-1999, 2004-2005. The high nutrient concentrations in the lake water during the three monitoring periods, as well as its eutrophic to hypertrophic status reflect the degree of impact anthropogenic activity has had on the lake. Commencement of a restoration plan in 1995-1996, involving sewage diversion, led to a reduction in external nutrient load and consequently to lower in-lake nutrients and Chlorophyll-a concentrations. Orthophosphate concentration decreased by about 87%, nitrates fell below 1.20mg/l, whilst the total reduction of inorganic N compounds showed a weaker downward trend, fluctuating between 0.39 and 1.24 mg N/l with an average value of 0.76 mg N/l. However, after a short-term recovery the eutrophic status of the lake remains eight years later (2004-2005), suggesting the importance of the internal loading process and the absence of the top-down effect of fish. This study provides evidence for the need of greater restoration efforts utilized in Mediterranean shallow lakes. (C) 2007 Elsevier Ltd. All rights reserved.en
heal.journalNameJ Environ Manageen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
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